PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/29-15:12:40
G08     317.8          14.1                3.3 +/-    1.78       8.5 +/-    1.78  0.040 / 0.040
G10     310.3          55.8                3.4 +/-    0.60       4.0 +/-    0.60  0.040 / 0.050
G14     212.2          19.5                4.5 +/-    2.64      10.0 +/-    2.64  0.110 / 0.460
G15     45.6           21.9                3.8 +/-    1.01       7.9 +/-    1.01  0.140 / 0.340
G20     11.4           64.3                4.3 +/-    0.67       4.7 +/-    0.67  0.060 / 0.040
G21     118.8          64.5                5.3 +/-    0.71       5.8 +/-    0.71  0.050 / 0.040
G24     84.5           27.9                6.0 +/-    0.64      11.0 +/-    0.64  0.080 / 0.130
G27     294.4          35.3                5.5 +/-    1.36       8.7 +/-    1.36  0.080 / 0.130
G32     214.4          38.3                6.1 +/-    1.43       9.2 +/-    1.43  0.060 / 0.070